//:C11:PointerToMemberFunction2.cpp
#include <iostream>
using namespace std;

class Widget
{
    void f(int) const { cout << "Widget::f()\n"; }
    void g(int) const { cout << "Widget::g()\n"; }
    void h(int) const { cout << "Widget::h()\n"; } 
    void i(int) const { cout << "Widget::i()\n"; }
    enum { cnt = 4 };
    void (Widget::*fptr[cnt])(int) const;
    public:
        Widget()
        {
            fptr[0] = &Widget::f;    // Full spec required  
            fptr[1] = &Widget::g;
            fptr[2] = &Widget::h;
            fptr[3] = &Widget::i;
        }
        void select(int i, int j)
        {
            if(i < 0 || i >= cnt)
            {
                return;
            }
            (this->*fptr[i])(j);
        }
        int count(){ return cnt; }
};

int main(void)
{
    Widget w;
    for(int i = 0; i < w.count(); i++)
    {
        w.select(i, 47);
    }
}

